A galoon is a gallon of the cheapest wine which means it is usually made from the residue of other wine pressings.
On the weekends we boys in the navy got drunk on a galoon of pink wine each cause it was cheap and fun to say - let's get ourselves a galoooooon of wine!
The origins of the Galhoon are unknown, all we know is that their vocabulary consists of phrases such as "what time?", mook and chunky monkey. The Galhoons are known to move in a very funny way, they extend both arms into fists and rotate them, before widening their mouth.